From patchwork Tue Mar 18 03:07:35 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faizal Rahim X-Patchwork-Id: 14020213 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 886BF19F47E; Tue, 18 Mar 2025 03:09:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742267360; cv=none; b=duHDAG7ScOkxbWjbs+WE6UrJKlhcdROoIG4zoC0wOpP/Dq98xrqkoPysPFvhtdHdlpq/4PeLDCMDYLIypWqI6F5vsBvOuUDeMD//g28yoCbYxmefcSVaeNo+7MJxmcggiWScnJrST0oFFw/cIGgEMMhRlMsCq5nG5iJpVCluov0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742267360; c=relaxed/simple; bh=Ij2fIraKDwf5/gzdQZNpLgFH8xiF4vMpUeJsnouOpmo=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fkaq8d+zd9vYNBQEdEh5pnxXed3bO73hVMuFFmhqspPM/2azhk6dwv/4UdYyB6CkqourMUy5QCEtvkGrRnSusjMoKwHerXKiCWOZnFGA/rRwCu+OXxRFD1D/pLM8UjKYkbvP1rajCodpPzR+usjospDp1KrgLz7UF+DnsWjviJs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=l7XA7YJv; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="l7XA7YJv" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1742267358; x=1773803358; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=Ij2fIraKDwf5/gzdQZNpLgFH8xiF4vMpUeJsnouOpmo=; b=l7XA7YJvkNT4cbnK9oHgqktdBhfm8H7nv3QAMksNbcKrqVpcYlaJUg6+ 3JLYteWV7cRaaFdS9MZF7M7ELsrv4aO3Jo8rPS34GTRqrNtnsHoJeHtNO cDPeqpwu+PBVEtLPN4l/fbW+aWqba97Dor4BLgsBd1T5oIyfmkaAi6eqb +B3WxsA+n2lExgLb0epxDaneaz+bbJBfBpBRitCtiYkhhN8VqKO359fVP eic1ctsy+G9lVLmid+1iqG+xw0J2/PTJYc45bkbfOBUpt/9F8rfSM+Xz/ eDIESbyFi2MWqa0WIvYUt9JGIcY6abd5/pybhybgQjyXWsMUovRbqDPqS A==; X-CSE-ConnectionGUID: a7d7DXAsQNayamC30kpqIQ== X-CSE-MsgGUID: bViJ04ryTAu5Ri1XPHKVsA== X-IronPort-AV: E=McAfee;i="6700,10204,11376"; a="54383023" X-IronPort-AV: E=Sophos;i="6.14,255,1736841600"; d="scan'208";a="54383023" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2025 20:09:17 -0700 X-CSE-ConnectionGUID: urQlzMbOTZKhsqIOQ4pdYg== X-CSE-MsgGUID: UU4iF30pQl6SehtwiFggJw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,255,1736841600"; d="scan'208";a="126313869" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa003.fm.intel.com with ESMTP; 17 Mar 2025 20:09:10 -0700 From: Faizal Rahim To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Simon Horman , Vladimir Oltean , Russell King , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Furong Xu <0x1207@gmail.com>, Choong Yong Liang , Russell King , Hariprasad Kelam , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Gal Pressman , Jesper Nilsson , linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-stm32@st-md-mailman.stormreply.com, Chwee-Lin Choong , Vinicius Costa Gomes , Faizal Rahim , Kunihiko Hayashi , Serge Semin Subject: [PATCH iwl-next v10 07/14] igc: optimize TX packet buffer utilization for TSN mode Date: Mon, 17 Mar 2025 23:07:35 -0400 Message-Id: <20250318030742.2567080-8-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250318030742.2567080-1-faizal.abdul.rahim@linux.intel.com> References: <20250318030742.2567080-1-faizal.abdul.rahim@linux.intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org In preparation for upcoming frame preemption patches, optimize the TX packet buffer size. The total packet buffer size (RX + TX) is 64KB, with a maximum of 34KB for either RX or TX. Split the buffer evenly, allocating 32KB to each. For TX, assign 7KB to each of the four TX packet buffers (total 28KB) and reserve 4KB for BMC. References: I225/I226 SW User Manual Section 4.7.9, Section 8.3.2 Co-developed-by: Vinicius Costa Gomes Signed-off-by: Vinicius Costa Gomes Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_defines.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h index b180e1497cc5..db937931c646 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -419,8 +419,8 @@ IGC_TXPB0SIZE(20) | IGC_TXPB1SIZE(0) | IGC_TXPB2SIZE(0) | \ IGC_TXPB3SIZE(0) | IGC_OS2BMCPBSIZE(4)) #define IGC_TXPBSIZE_TSN ( \ - IGC_TXPB0SIZE(5) | IGC_TXPB1SIZE(5) | IGC_TXPB2SIZE(5) | \ - IGC_TXPB3SIZE(5) | IGC_OS2BMCPBSIZE(4)) + IGC_TXPB0SIZE(7) | IGC_TXPB1SIZE(7) | IGC_TXPB2SIZE(7) | \ + IGC_TXPB3SIZE(7) | IGC_OS2BMCPBSIZE(4)) #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */